<?xml version="1.0"?>
<powder xmlns="http://www.w3.org/2007/05/powder#" 
        xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
        xmlns:ex="http://example.org/vocab#">

  <attribution>
    <issuedby src="http://authority.example.org/company.rdf#me" />
    <aboutregex>\:\/\/(([^\/\?\#]*)\@)?([^\:\/\?\#\@]+\.)?(example\.org|example\.com)(\:([0-9]+))?\/</aboutregex>
  </attribution>

  <dr>
    <iriset>
      <includeregex>\:\/\/(([^\/\?\#]*)\@)?([^\:\/\?\#\@]+\.)?(square\.example\.org)(\:([0-9]+))?\/</includeregex>
    </iriset>
    <descriptorset>
      <ex:shape>square</ex:shape>
    </descriptorset>
  </dr>

  <dr>
    <iriset>
      <includeregex>\:\/\/(([^\/\?\#]*)\@)?([^\:\/\?\#\@]+\.)?(round\.example\.com)(\:([0-9]+))?\/</includeregex>
    </iriset>
    <descriptorset>
      <ex:shape>round</ex:shape>
    </descriptorset>
  </dr>

  <descriptorset xml:id="silver">
    <ex:finish rdf:resource="http://example.org/vocab#shiny"/>
    <ex:shape>square</ex:shape>
  </descriptorset>

</powder>
